Automatic water regulator and surface blow-off.



D. M. MAXONt AUTOMATIC WATER REGULATOR AND SURFACE BLOW-OFF.

APPLICATION FILED MAY 8, 1906.

969,294, Patented Sept. 6, 1910.

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OOOOOOO lNvEN-roR DANlEL M. MRXON.

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m: NORRIS PETERS co., WASHINGIGN 11 D. M. MAXON. AUTOMATIC WATERREGULATOR AND SURFACE BLOW-OPP.

APPLICATION FILED MAY 8, 1906.

Patented Sept. 6,1910

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DAmEL M. MAxoN. 7@W Wag/W ill/l DANIEL M. MAXON, OF ST. LOUIS, MISSOURI.

AUTOMATIC WATER REGULATOR AND SURFACE BLOW-OFF.

Specification of Letters Patent.

Patented Sept. 6, 1910.

Application filed May 8, 1906. Serial No. 315,824.

To all whom it may concern:

Be it known that I, DANIEL M. MAxoN, a citizen of the United States, andresident of St. Louis, Missouri, have invented certain new and usefulImprovements in Automatic ater Regulators and SurfaceBlow- Offs, ofwhich the following is a specification containing a full, clear, andexact description, reference being had to the accompanying drawings,forming a part hereof.

My invention relates to an automatic water regulator, and surface blowoff, and the object of my invention is to construct a simple apparatuswhich automatically regulates the water which is pumped into a steamboiler, and which purifies said water by removing the sediment whichaccumulates on the surface of the water when the same has become heated.

My invention further consists in certain novel features of constructionand arrange ment of parts, which will be hereinafter more fully setforth, pointed out in my claim, and illustrated in the accompanyingdrawings, in which Figure l is a side elevation of a portion of a boilerequipped with my improved apparatus with parts of said boiler brokenaway to more clearly illustrate portions of the apparatus; Fig. 2 is avertical section taken through the blow off portion of the apparatus;Fig. 3 is a vertica section taken on the line 33 of Fig. 2; Fig. 4 is anenlarged detail section taken on the line 4 4 of Fig. 1.

Referring by numerals to the accompanying drawings: 1 designates ahorizontal boiler of the usual type, and provided with the ordinaryboiler tubes 2. Fixed in the top of the boiler is a vertically arrangedtube 3, the upper end of which is screw seated in a hollow block 4.Formed integral with and projecting upwardly from the sides of thisblock 4 is a pair of vertically disposed bars 5, and formed integralwith the upper ends of said bars is a hollow block 6, arrangedimmediately over the hollow block 4. Removably positioned on top of thehollow block 6 is a cap 7 through which is formed a passageway 8.Removably positioned in the upper end of the block 6 is a ring 9, and onthe opposite sides thereof around the openings therethrough are formedthe beveled valve seats 10. This arfor the reversal of the rangementprovides the valve seats becomes ring 9 when one of worn from use.

11 designates a valve in the form of a disk with its top and bottomedges beveled to correspond with the beveled seats 10, and said disk isnormally positioned against the under side of the ring 9, and closes theopening therethrough. Formed in the top and bottom surfaces of thisvalve 11 are recesses 12.

Arranged on top of the block4 and on the under side of the block 6 arestuffing boxes 13, arranged for vertical movement therethrough is a rod14, the upper end of which fits in the recess 12 in the under side ofthe valve 11. The lower end of this rod 14 terminates on the interior ofthe hollow block 4, and screw seated in the lower end of said rod is theupper end of a small rod 15. Fixed to the lower end of the rod 15immediately below the lower end of the tube 3 is a float 16, in the formof an open topped pan, which is intended to normally rest on top of thewater in the boiler. Leading from the hollow block 4 outwardly andupwardly into the cap 7 is a tube 17 in which is located a suitablevalve 18. A weight lever 19 is fulcrumed to one of the bars 5, andextends from thence through the slot 20, formed through the rod 14, andsaid lever also extends through the slot 21 formed in the opposite bar5; and adjustably located on the free end of said lever is a weight 22.The fulcrum point of this weight lever can be adjusted as desired, andthe weight- 22 can be adjusted on the lever so as to regulate the depthof the pan 16 in the water within the boiler. Leading outwardly from thehollow cap 6 below the ring 9 is a pipe 23 which leads to the pump 24,which supplies the water to the boiler; and located in this pipe, infront of the pump is a two-way valve 25, from which leads outwardly apipe 26, on the end of which is located a suitable whistle 27. Leadingfrom the pump 24 upwardly and into the boiler, through the top thereof,is a pipe 28, which is the pipe which delivers the supply of water fromthe pump to the boiler.

Located immediately beneath the discharge end of this supply pipe 28,and resting upon and fixed to the top row of boiler from a point samewill sink beneath the surface of the water, thus drawing the rods 15 and14: downwardly and unseating the valve 12. As soon as the pan isentirely submerged, water is forced outwardly through the pipe 3 andvarious other connections, as just specified, and the air in advance ofthis water is forced outward through the pipes 23 and 26, and as saidair passes through the whistle 27, an alarm is given; and the operatorby now turning the valve 25, directs the discharge of water to the pump24, by which pump it is delivered back to the boiler through the pipe28. The speed of the pump is now regulated so as to supply the properamount of water to the boiler, and as the water level in the boiler isbrought back to normal, the pan 16 will again float on top of said waterand close the valve 11.

It is a well known fact that in steam boilers a large portion of thesediment, or impurities, in the water rise to the top thereof when thewater boils in the generation of steam, and my improved apparatus can beutilized as a surface blow ofi by purposely increasing the supply ofwater to a boiler until the pan 16 sinks, and thus the surface waterwithin the boiler containing the sediment and impurities willautomatically be blown off and removed from the boiler, through the pipe26. Then this blowing off operation takes place, the water within thepan 16 is forced out through the pipe 3, owing to the fact that thelower end of said pipe extends almost to the bottom of said pan 16.Therefore, when the water is again brought to its normal elevation, thepan will float on the top of the water.

In order to purify the water discharging into the boiler, a quantity ofoil is located in the box 29, and a small quantity of oil is allowed todischarge with the water through the pipe 28, and the oil in the box 29gradually absorbs the sediment and impurities of the water discharginginto the boiler, and in a short time the amount of oil in the boxbecomes of such volume and of such weight as that a portion of the oil,carrying the impurities, is forced out of the bottom of tubes 2 is arectangular box 29, the upper and lower ends of which are open. Thelower end of this box is normally below the water line of the boiler,and the upper end thereof is above the water line of the boiler.Supported on top of this box 29 is a series of open topped pans 30, thesame being arranged at equal distances apart, and with the top panimmediately beneath the discharge end of the pipe 28.

Formed through the center of the bottom of each pan is an aperture 31,and horizontally disposed in each pan, immediately above said aperture,and held in any suitable manner, is a disk 32, there being a slightspace between the periphery of each disk and the side wall of the pan inwhich it is located.

The operation of my improved apparatus is as follows: The pump 2% beingoperated forces water through the pipe 28, and said water dischargesfrom the end of said pipe 28 onto the upper one of the disk 32. Thewater flows over said disk and discharges from the edge thereof into theupper one of the pans 30, and discharges through the aperture 31 in thebottom thereof into the next lowermost disk 32; and this flow iscontinued throughout the series of alternately arranged pans and disksuntil the water finally discharges from the lowermost pan into the box29. The incoming water thus traverses a tortuous passage through thepans, and, in so doing, spreads over a considerable area in anapproximate thin sheet, and thus becomes heated before discharging intothe body of water already within the boiler.

The steam within the boiler maintains the pans and plates at a very hightemperature. The open topped pan 16 normally floats on top of the waterwithin the boiler, and if for any reason the water supply shoulddecrease or be shut off so as to cause the amount of water in the boilerto drop below normal, the pan will move downwardly with the decrease ofwater in the boiler, and, as a result, the rods 15 and 1a are pulleddownwardly, thus unseating the valve 11 from the under side of the ring9. Steam now passes upthe box, which amount will of course correwardlythrough the tube 3 into the hollow spond with the amount of oil beingdelivhead 1, and thence through the hollow pipe ered to the box with thewater. The oil 17 into the cap 7; from thence past the open valve 11,through the pipe 23, and from thence out through the pipe 23, and fromthence out through the pipe 26, and through the whistle 27 which isnecessarily sounded by the escaping steam. The valve 25 is normally setso as to allow the steam to pass from the pipe 23 to the pipe 26.Should, for any reason, the supply of water to the boiler increase so asto rise above normal, said water will finally overflow the upper edge ofthe pan 16, and, as soon as a suificient amount of water has enteredsaid pan, the

discharging from the lower end of the box, with the impurities held insuspension being rise to the surface thereof to be removed wilfien theapparatus acts as a surface blowo The proper quantity of oil to belocated in the box 29 can be supplied through the inlet pipe 28 wheneverdesired.

The weight 22 can be regulated on the lever 29 so as to correspondinglyregulate the action of the rods 1 1 and 15, and the pan 16. The ring 19and valve 11 are made reversiof less specific gravity than the water,will i steam boiler ble in order that they may be inverted should eitherone or both become worn from use.

An apparatus of my improved construction is simple, inexpensive, easilyinstalled on boilers already in use, purifies the water delivered to aboiler, and automatically removes the surface water from a boiler whichcontains a large percentage of impurities.

I claim The improved automatic water-level indicator and surfaceblow-ofi' for steam-boilers, comprising a float in the form of an openpan adapted to rest upon the water in a and rise and fall therein withthe fluctuations of water-level; a blow-off valve mounted exterior ofthe boiler; a rod extending from said valve to said pan, so that saidvalve and said pan will move in unison as the Water-level rises orfalls; two stuffing-boxes through which the rod operates; aweighted-lever applied to said rod at a point intermediate of said twostuflingboxes; an adjustable-weight on said lever; a blow-ofl pipethrough which water from a point near the bottom of the interior of saidpan passes out of said boiler whenever the Water-level risessufliciently to overflow said pan, and through which pipe steam passeswhen the water-level abnormally falls; a pipe into which the dischargedWater and steam pass from said side of said valve; and another pipe intowhich said steam and Water are discharged after passing by said blow-0H"valve.

In testimony whereof, I have signed my name to this specification, inpresence of two subscribing witnesses.

DANIEL M. MAXON. I Witnesses:

M. P. SMITH, EDWARD E. LONGAN.

blow-off pipe to one

